Nut-lock.



3 x. `an1\IoI-.n nnrnnicn; WEGENER, or HoBoKnN,'Nnw

i iTdlZiptO-mttmay concern:

we'vltkhown that I, ARNOLD HEINRICH I it ` 'NUT-LOCK.

GnNnR,acitizen of Ithe UnitedI States,

Land resident of Hoboken, in the county of Al,IfIndfson.and State of VNew Jersey, have. in- -Wentedfa lnewand Improved Nut-Lock, of ,cwvlrich-" the following is `a full, clear, and .vexactldescriptiom X i 1 ..This invention relates tty-,peinwh-ich there is a rotary member conesk stituting under lcertain conditions a wedge preventing vby its coperationbetween the boltiand taperin portion of the 'nut a movement of the'nut 1n a certain direction.

' I.Among thebbjectso this invention is to simplify and `hence cheapen this type of nut locks and at' the same time; make them more jeliicient than those heretofore proposed.,

The foregoing and other obJects of this inventionwill hereinafter be more fully described and claimed and illustrated in the drawings forming a part of this specificaline 1-1 of FigL2; Fig 2'is a transverse sec-- tion in which like characters of reference indicate corresponding parts in allrthegtviews, andrrn which" l i ,i re 1 1s a. vertical'sectional view on the tionen the line 2.-2 otgIig. l; Fig. 3 is a detailof the locking'rolle'r and means to control its position,"and Fig. 4 is amodification showing a nut ,having two locking .rollers,

one `ont-he outside, andithe otheron the in- Side, the gure'being in section on. a plane f corresponding vto Fig, '2 to disclose the innerA $35.

roller. .v

Theseveral parts of this device may-be made of any sultable materials and the relative sizes and proportions, as well as the specific designthereof, may be varied to a it@ considerable extent without departin from' the spirit jof the invention herelnater claimed.

- At Lshow a bolt of conventional form and Vhaving apthread .111 upon'which a nut 12 .45

is mounted and operated in the usual manner for the purpose oiasecuring the bolt in place as when clamping certain 4parts represented at 13 together. .The nut is shown i' t provided 'with a crescent-shaped recess 14 formed preferably by a rotary milling cutternpn. eitherthe inner `or outer faceof the nut' 12,1 .or in certain instances, I may form y,auch@recesses on both'the inner and outerfaces, as shown in Fig. 4. yAsshown in Fig.

. -ff ms ofthe-bolt and nut, whereby there isl 2, thefrecess 14 is cutfeccentrically of the y Y `Specifmation of Letters Patent.

Application filed March 5,1913. Serial N0. 752,062- L to nut loclis of that Patenten-Janse formed a tapering space/14 atgealn the recess 14, and copratin'g infone'io'f snch ends is avroller 15. The frollerisfprieferably secured within the recess-and'fat ai substantially definite positionf#thereinfI byrl-a'! eculiarly formed springflw? Wit E)rtl formed as above indicated,I it'is provided with a substantially smoothj cy-ljindricalvtiall bears substantially againstithe threa ed-`p`er l tionspf the bolt, andili'notit'ootliicfl iftletvill engage` preferably between? two fadjfacent threads. thereof. The rollerfimaly be-Todi 'any desired construction orjfornlgfbut as?` shbwn y 1 t compmses aldlsk having faficen all at 16 and isprovided withiajpintlefor "'fi' er 17 which extends vthroughi-'thefaforesafi hole The depth of tlfre'notol'i"1y l' erably slightly greaterltlianithe i the disk, and I the `witlthf fot' gtheno stantially squali-to theradin'sof'iilledisk otitside of the holerwherebyxtherspatngilormally acts upon the .d' at twofdiife pali-Q A- t :,113"

The nut 12 is provided with a entier lrerf 12 extending throughvth'sidefwvall"14 of the recessylil into `which-"ffthe end "16a/d the spring is seemed. Saidtke'r lrlayextend Isl:

as far outwardtoward theonts'idefofithei 1 nut as sdesired, but` preferatly artist-minnen, asshown in Fig. 2 so that the nut locking .mechanism is allfsubstan'tially housed within the nut when in use. 4Said kerf'12, while opening into the recess 14, is preferably arranged so -as to form an angle with the vwall 14 so that ywht-l1 the spring 16 extends from the kerf into and along the recess 14 it may not normally engage'the wall 14,

the normal position and form'of the spring 1 14 against which the'ro'ller 'bearsradifally'f .the,bolt. "Ihe inner portionfidfftjl endiiof irecesstI being indicated in Fig. 2 with the roller 15 in substantial engagement with the wall 14" and the thread' 11 ofthe bolt. i

Upon turning thenut in the direction indicated by the arrow on Fig. 2, the contact 'between the roller and the other partswill tend tocause thev roller to move toward the dotted line position andlin which position the roller .fill have no Wedging or locking effect. In other words, the rotation of the nut, the bolt remaining stationary, will tend to cause the roller to. approach the widest portion of the recess 14,1it being understood that the roller normally lies within one of the ytapering :ends 14 olf said` recess. By

`"reason, however, -of the normal tendency of the spring to maintain thev roller in contact with bot-h the nut and bolt, any atl tempt to turn the nut in the opposite direc- `regardless `of the'direction in which the spring is set; that is to say, under certain conditions it may be desired to reverse-the position shown in Fig. 2, in order to make the lock effect-ive to prevent the turning on of the nut while allowing free rotation for the removal of the nut. It will be seen, therefore, that it a nut be provided with tivo cavities, one on the inner face and the Vother on the outer face,'with a locking roller in each, and each of the rollers applied to its recess in the direction in which the nut is to be turned on, if that particular face be considered as Athe inner one one of the rollers will resist such turning and the other will resist turning in the opposite direction. In order to release the roller so as to render it inoperative for its locking purpose, a key K shown in dotted lines in Fig. 2 may be introduced through a notch 7c formed in the nut, the point of the key pushing the roller toward the widest portion of the recess. IVhen the 'key is thus inserted the nut may be turned freely in a reverse direction.

As illustrated, the spring 16 serves to hold the roller 15 in proper position at all times except when the key is applied. The spring at its neck portion 1S prevents lateral movement of the roller from the nut, and even though the pintle 17 become rusted or broken oif,A the shoulder 16b bearing against the periphery of the roller will still maintain it in posltion to grip and prevent unscrewing of the nut. v

Having thus described my' invention, I claim as new and desire to secure by Letters Patent:

1. The herein described nut lock comprising, in combination with a bolt, a nut turned upon the bolt, said nut having a crescentshaped recess formed in one face eccentrically-of the axis of the bolt, said recess having a smooth wall, a roller mounted in the end of said recess between the bolt and said Wall, and a spring having one end embedded in the nut and the other end abutting against said roller, the intermediate portion of the spring being spaced from the nut Within said recess. f

2. The herein described nut lock comprising a bolt having a threaded end, a nut cooperating therewith, said nut having a tapered recess Aformed therein adjacent. the bolt, a roller located in said'recess and having a central hole, a spring located in the recess beyond the roller, said spring having a shoulder bearing against the periphery of the roller and also havin a pintle extending through said hole an serving to maintain the roller in gripping position, and means to unlock the roller, substantially as set forth.

In testimony ywhereof-I have signed my name to this specification in the presence of two subscribing witnesses.

ARNOLD HEINRICH WIIGENER. 

